/Engine/Source/Editor/UnrealEd/Public/Elements/Component/ComponentElementDetailsInterface.h
Is the given element considered "top-level" for editing? ie) Should it be edited simply from being part of the main selection set for a level?
virtual bool IsTopLevelElement ( const [FTypedElementHandle](API\Runtime\TypedElementFramework\Elements\Framework\FTypedElementHandle) & InElementHandle )